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5. Fit the new pads. Fit one of the retaining pins
in
position, then the damping springs and
finally
the other retaining pin. Fix
the pins with
t he re-
taining clips.
Check
that the pads are movable.
6.
After the requisite brake
pads have been
re-
placed,
depress the brak
e
pedal
severa
l
times to
che ck if the movement is normal
.
Genera
lly the
system
does not require venting after replacing
the brake pads.
7. Fit the
wheels after the
contact surfaces
between
wheel
and
brake disc have been cleaned of sand,
etc. Tighten
the nuts so much that the wheel
can-
not be moved
.
Lower the vehicle and
secure
the
wheel nuts.
Tighten every second
nut
a
little at
a
time until
all are finally
tightened
to a torque
of
10-14
kgm
(70-100
Ib.ft.).
Fit
the hub
caps.
Rea·
r wheel brake units
l.
Remove the hub
caps and siaeken the wheel
nuts.
2.
Jack
up
the
rear
end and place
blocks
under th
e
rear axle. Remove
the wheels.
3. Remove
the hairpin-shaped retaining
clips
for
the
guide pins,
see Fig.
5-10.
Pull out one of the
retaining pins while keeping the damping springs
in position.
Remove
the springs and t hen
the
other
retaining pin. Pull o ut
th
e
pads and
the
spacers,
see
Fig.
5-18.
Fig.
5·17.
Push ing
in
the piston
VOLVO
102985
Fig. 5·18. Fitting the brake pads
4.
Carefully
clean the cavity
occupied by
the
pads.
If
any of the rubber covers is
damaged,
replace
it.
If
dirt
has
penetrated
into the cylinder
due
to
a damaged
cover, recon
di
tion the
brake
unit.
5. Press
the
pistons
into
the caliper
with tool
SYO
2809.
Wh en
pressing
in, check
the function
of
the
pistons in
the
A.S.B.
device, see Fig.
5-17.
The
pressing-in force
should be
20-80
kg/cm
(17-70
Ib. in
.).
If
the
force
required
is
greater
than thi s,
the
caliper
should be reconditioned.
Note
that
when
press
ing in
the pistons,
the brake fluid level
in the brake fluid container will
rise
possibly
caus-
ing
the
fluid
to
spurt
out.
6.
Fit the new pads,
and
the
spacers,
according
to
Fig.
5-18,
with the
recess
in the lining facing down
-
wards
.
Fit
one of the
retaining
pins in position
and
install the
damping springs
and the other retaining
pin
.
Fix
the pins with retaining clips
.
Check that
the pads
are
movable.
7.
Af ter the
requisite
brake pads have been
replaced,
depress the brake pedal
several
times to check
that
the
movement is normal. Generally the
system
does not
require
venting after
replacing
the brake
pads.
8. Fit
the wheels afte
r
the
contact
surfaces between
wheel
and
brake disc have been cleaned of sand,
etc. Tighten
the nuts
so
much that the wheel
can-
not be moved. Lower the vehi cle and tighten the
wheel nuts.
Tighten every
second nut
a
little at a
time until
all
are tightened to
a
final torque of
10-
14
kgm
(70-100
Ib.H.).
Fit
the hub caps.
5
: 11
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